I guess the ETHBTC vision could be also useful for that discussion. Ethereum is getting more and more powerful against the Bitcoin and I guess we can get really close to the change of the king. Here is the ETHBTC chart for 2017. Last spring Ehtereum made a leap, I guess it is repeatable:
A bit more analysis is behind the link.
Thanks for your videos, @louisthomas! Good content and nice quick presentation.